Air toxics respiratory hazard index

{
  "id": "MLC-T-ENV-000918",
  "term": "Air toxics respiratory hazard index",
  "field": "Environment",
  "term_source": "Air Toxics Respiratory Hazard Index",
  "definition": "Air toxics respiratory hazard index (the sum of hazard indices for those air toxics with reference concentrations based on respiratory endpoints, where each hazard index is the ratio of exposure concentration in the air to the health-based reference concentration set by EPA).",
  "subject": "Measurements",
  "references": [
    "EPA 2011 National Air Toxics Assessments; Glossary of EJSCREEN Terms"
  ],
  "url": "https://mlchart.com/terminology/environment/air-toxics-respiratory-hazard-index/"
}